S
M
T
W
T
F
S
27
66°
53°
28
70°
53°
29
69°
52°
30
64°
59°
1
65°
55°
2
59°
43°
3
60°
46°
4
63°
51°
5
56°
46°
6
67°
47°
7
70°
51°
8
64°
49°
9
61°
44°
10
70°
56°
11
70°
56°
12
69°
57°
13
58°
51°
14
56°
48°
15
53°
48°
16
49°
38°
17
54°
33°
18
64°
37°
19
59°
49°
20
61°
49°
21
61°
52°
22
57°
48°
23
58°
52°
24
63°
51°
25
63°
47°
26
58°
46°
27
55°
47°
28
57°
46°
29
58°
48°
30
56°
47°
31
49°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Sister Bay
Sister Bay's October 2026 forecast shows daily high temperatures ranging from 49° to 63°, with overnight lows between 43° and 52°. The average high for October is 58° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Sister Bay. See also: November | December | January.
